|No.|Title|Directed by|Written by|Original Air date|
|---|---|---|---|---|
|1|"Reunion"|Bryan Spicer|Patrick Massett & John Zinman|January 27, 2003|
|2|"Antarctica"|Perry Lang|Patrick Massett & John Zinman|February 3, 2003|
|3|"Skulls"|Adam Nimoy|Patrick Massett & John Zinman|February 10, 2003|
|4|"Heist"|Rick Kolbe|Rick Kellard|March 10, 2003|
|5|"The Wheel Of Dharma"|R. W. Goodwin|Stephanie Bloch-Chambers & Julie Bean|Unaired in U.S|
|6|"Sangraal"|Perry Lang|Gabrielle Stanton & Harry Werksman, Jr.|Unaired in U.S|
|7|"Mummy Virus"|Vern Gillum|Rick Kellard & Thania St. John|Unaired in U.S|
|8|"Name Of God"|Michael Nankin|Brad Falchuk|Unaired in U.S|
|9|"Devil's Child"|Tom Wright|Thania St. John|Unaired in U.S|
|10|"Avalon"|Dwight Little|I. C. Rapoport|Unaired in U.S|
|11|"The Lost Codex"|Tom Wright|Gabrielle Stanton & Harry Werksman, Jr.|Unaired in U.S|
|12|"Eternal"|Fred Gerber|Thania St. John & Chad Hodge|Unaired in U.S|
|13|"Helmholtz Resonance"|Larry Shaw|Patrick Massett & John Zinman|Unaired in U.S|

Question: what are the number of titles written by patrick massett and john zinman?
Answer: 4